Portable bake-oven.



No. 704,060. Patented July l5, |902. J. misma.

PORTABLE BAKE UVEN.

(Applcatiop filed July 29, 1901.) (No Model.) 2 Sheets-5h0et I.

LW atten/wig No. 704,660. Patented July l5, |902. J. NESTOR.

PORTABLE BAKE OVEN.

fAppliaton led July 29, 1901.) (No Model.) l 2 SheeisSheet 2.

witnesses TTE STATES PATENT OEEICE.

JOHN NESTOR, OF TAOOMA, WASHINGTON.

PORTABLE BAKE-OVEN.

SPECIFICATION forming part of Letters Patent No. 704,660, dated July 15, 1902.

Application led July 29, 1901.

T0 Cr/Z whom, it 'nm/y concern:

Be it known that I, JOHN NESTOR, a citizen of the United States, residing at Tacoma, in the county of Pierce and State of Vashington, have invented new and useful Improvements in Portable Bake-Ovens, of which the follow ing is a speciiication.

The invention relates to improvements in ovens, and more particularly to a heating system for the baking-compartments thereof.

lt consists, in combination with suitable supports, of a series of baking-compartments, iire-boxes beneath some of said compartments, means for conducting heat from one of said compartments to another, and means for preventing such communication.

lt also consists of certain other novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described and claimed.

In the accompanying drawings, Figure l represents a View in front elevation of an oven embodying the features of the present invention. Fig. 2 represents a View in elevation of the rear of the same, the supporting brick structu re being cut away to disclose the arrangement of the interior. Fig. 3 represents a vertical section taken on the plane of line 3 3 of Fig. 2. Fig. 4 represents a horizontal section on the plane-line 4 4 of Fig. 3.

In the art to which the invention relates it has been found desirable to secure an oven capable of being heated in a minimum of time and at the same time to prevent waste of heat, and to attain these and other very desirable results I employ, as seen in the accompanying drawings, any suitable inclosing and supporting structure, as l, formed with a suitable number of `fire-boxes, as 2, and a warmingcompartment S, interposed between each two of said fire-boxes. The fire-boxes 2 may be provided with any suitable grates and constructed and arranged as preferred, each warming-compartment 3 being also of any desired form and receiving its heat from the fire-boxes through the side walls thereof. Above each fire-box 2 is arranged a bakingcompartment, as 4, and above compartment 3 is another compartment 5, each compartment being formed with doors 6 and provided with any desired number of suitable horizontallyadjustable supporting-plates, as 7. The cover Serial No.70.l'75. (No model.)

the heat may readily pass from the fire-boxA 2 almost directly to the compartment above the same, and thereby facilitate the rapid heating thereof.

Each fire-box 2 is provided with a pipe, as

14, for conducting the products of combustion Jtherefrom, said pipe rising in the rear of the respective compartment 4, being bifurcated and extendingin divergent lines, as at l5 15, and again converging, as at 16, to an outletpipe 17, which in turn communicates with a common outlet 18, the combustion-conducting pipe thus forming a rhombus or diamondshaped figure within the oven 4. At the upper point of the diamond a pipe, as 19, leads into compartment 5, a second pipe, as 20, leading from the central corner into oven 5 and communicating with pipe 19, said pipe extending downwardly to approximately the center of said compartment and converging with the corresponding pipe from the other compartment 4, the two forming a general outlet-pipe, as 20', rising upwardlyin the oven and passing out the top thereof.

Any suitable form of dampers, as 2l 21, are arranged within pipes 19 and 20, and similar dampers, as 22, are arranged Within pipes 17.

At the junction of the two pipes 1.9 a suitable aperture is formed and closed with a cap, as 23, which cap is designed to be removed to facilitate removal of soot and any foreign substances.

A suitable wall separates each compartment 4 from its contiguous compartment 5, and an aperture is preferably formed therein and normally closed by a damper, as 24, preferably horizontally slidable and designed to be operated for opening said aperture to permit direct communication between compartment 4 and compartment 5, whereby the latter compartment may be heated in a minimum IOO of time-when desired, and it will be noted that all of the above-mentioned dampers are preferably provided with suitable stems and handles extending to the front of the oven within easy reach of the operator.

. When it is desired to employ only compartment 4, all the dampers 2l are closed, and when it is desired to heat compartment 5 all of said dampers are opened, or any preferred number may be opened to secure the proper degree of heat. When the dampers 2l are open for heating compartment 5, the dam pers 22 are closed, but when dampers 2l are closed dampers 22 are opened, whereby in either case the products of combustion will escape through the pipe opened for them.

Any desired number of compartments et may be employed with a compartment 5 between yeach two thereof; but I have shown only one set of compartments, the same fully illustrating and involving all of the features of the present invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. An oven, comprising in its construction baking-compartments, mounted above suitable iire-boxes, a baking-compartment interposed between the compartments above the fire-boxes, means for permitting communication of heat directly between all of said compartments, and means for vconducting products of combustion from said lire-boxes through the interposed baking-compartment, substantially as described.

2. In an oven, the combination with a suitable support, forming a fire-box, of a bakingcompartment mounted above the same, apipe for conducting the products of combustion leading from the iire-box into the baking-compartment, bifurcated and extendingin divergent lines, and then converging and being reunited, and extending beyond the bakingcompartlnent, a second baking-compartment arranged at the side of the first-mentioned compartment, and means for leading the products of combustion from said pipe through said last-mentioned compartment for heating the same, substantially as described.

3. In an oven, the combination with a suitable support, forming fire-boxes, of'bakingcompartments mounted above said fire-boxes, a baking-compartment interposed therebetween, pipes leading from said fire-boxes for conducting theproducts of combustion, extending into said Iirst-mentioned baking-compartments, and then extending into said second-mentioned baking-compartmentandconverging into a single pipe and extending outside the same, substantially as described.

4. In an oven, the combination with a suitable support forming fire-boxes, baking-compartments formedl above said lire-boxes, a baking-compartment interposed therebetween, a pipe leading from each of said reboxes into its respective baking-compartment, the said pipe continuing above said bakingcompartment, a pipe leading from each of said combustion-directing pipes within the respective baking-compartments and into the interposed baking-compartment, and then extending beyond the same, dampers arranged in the pipes leading into said interposed bakingcompartment, whereby the products of combustion may be directed through the pipes within the said interposed compartment or be prevented from passing therethrough, substantially as described.

5. In a baking-oven, the combination with a suitable support, and lire-boxes, of a baking-compartment arranged above each of the tire-boxes, a baking-compartment interposed therebetween, a pipeleading from each of said fire-boxes through its respective baking-compartment and beyond the saine, for conducting the products of combustion, a damper arranged in said pipe, a pipe communicating with each of said combustion conducting pipes below the damper thereof and leading into said interposed chamber, the last-mentioned pipes converging and extending outside said last-mentioned chamber, and a damper arranged in each of the said last-meny tioned pipes, substantially as described.

6. In an oven, the combination with a suitable support and fire-boxes, of a warmingcompartment arranged between said fireboxes, a baking-compartment arranged above each of said tire-boxes, a combustion-conducting pipe leading from each of said tire-boxes to its respective baking-compartment, each of the said pipes being bifurcated and extending in diverging lines and again extending in converging lines and forming a single pipe leading outside its respective baking-compartment, whereby a rhombus or diamondshaped structure is formed in the oven, a pipe extending laterally from lthe upper corner of each of said diamonds, a pipe extending laterally approximately from the central corner to each of said diamonds, the two pipes of each respective oven converging into a single pipe within the interposed oven and the two pipes formed thereby converged into a single pipe, said pipe leading outside the interposed oven, a damper arranged in the upper portion of the pipe of each of the first-mentioned baking compartments above the diamond thereof, and a damper arranged in each of the laterally-extending pipes, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN NESTOR.

Witnesses:

JOHN F. LYON, W. G. HELLAR.

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